公开(公告)号：US20140289512A1

公开(公告)日：2014-09-25

申请号：US13847562

申请日：2013-03-20

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Huei-Ru Tseng ,  Pei-Chuan Tsai ,  Rong-Hong Jan ,  Chien Chen ,  Hsia-Hsin Li ,  Chih-Che Lin

IPC: H04L9/32

CPC classification number: H04L9/3265 ,  H04L9/3268

Abstract: Embodiments of the present invention are directed to methods and systems for generating and revoking, as well as validating, certificates used to protect communications within networks while maintaining privacy protection. In the context of a method, certificate generation and revocation with privacy preservation comprises determining a secret value to be used by a certificate authority and an entity; constructing a key tree based on the secret value, wherein the leaves of the key tree represent derived keys for the certificates for the entity; and generating certificates for the entity based in part on the key tree leaves. The method further comprises determining that one or more of the certificates should be revoked; determining a minimum key node set that covers the certificates to be revoked; adding the minimum key node set to a certificate revocation list; and providing the certificate revocation list to one or more entities. Corresponding apparatuses and computer program products are also provided.

Abstract translation: 本发明的实施例涉及用于生成和撤销以及验证用于保护网络内的通信的证书同时保持隐私保护的方法和系统。 在方法的上下文中，具有隐私保护的证书生成和撤销包括确定由认证机构和实体使用的秘密值; 基于秘密值构建密钥树，其中密钥树的叶表示实体的证书的导出密钥; 并且基于密钥树叶部分地为实体生成证书。 该方法还包括确定一个或多个证书应被撤销; 确定覆盖要撤销的证书的最小密钥节点集; 将最小密钥节点集添加到证书吊销列表中; 并将证书吊销列表提供给一个或多个实体。 还提供了相应的设备和计算机程序产品。

公开(公告)号：US09497768B2

公开(公告)日：2016-11-15

申请号：US14339217

申请日：2014-07-23

Applicant: Industrial Technology Research Institute

Inventor： An-Kai Jeng ,  Chia-Tai Tsai ,  Rong-Hong Jan ,  Chien Chen

IPC: H04W4/00 ,  H04W72/10 ,  H04L12/825 ,  H04L29/08 ,  H04W4/04 ,  H04W4/22 ,  H04W84/12

CPC classification number: H04W72/10 ,  G08G1/163 ,  H04L47/263 ,  H04L67/12 ,  H04L67/325 ,  H04W4/046 ,  H04W4/90 ,  H04W84/12

Abstract: A method of dynamic adjusting a generation frequency of messages in vehicular networks is provided, including: receiving updating requests and emergent degree of the vehicle event, and then determining whether the generation frequency of messages meets the dynamic change of the vehicle, if not satisfied, selecting a different adjustment method according to the event emergent degree. When the event is emergent, its generation frequency can be raised immediately by an interruptive adjustment and to suppress the generation frequency of messages of the others. Conversely, adjusting its generation frequency by a progressive adjustment and reducing the generation frequency of messages of the other lower-priority vehicles. According to the present disclosure, it prevents lower priority messages from occupying the channel overly, and emergency messages with higher priority can be satisfied immediately when it needed.

Abstract translation: 提供一种在车辆网络中动态调整消息的生成频率的方法，包括：接收更新请求和车辆事件的紧急程度，然后确定消息的生成频率是否满足车辆的动态变化，如果不满足， 根据事件突发度选择不同的调整方法。 当事件出现时，可以通过中断调整立即提高其生成频率，并抑制其他消息的生成频率。 相反，通过逐行调整来调整其生成频率，并降低其他较低优先级车辆的消息的产生频率。 根据本公开，防止较低优先级消息过度占用信道，并且当需要时可以立即满足具有较高优先级的紧急消息。

公开(公告)号：US09425967B2

公开(公告)日：2016-08-23

申请号：US13847562

申请日：2013-03-20

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Huei-Ru Tseng ,  Pei-Chuan Tsai ,  Rong-Hong Jan ,  Chien Chen ,  Hsia-Hsin Li ,  Chih-Che Lin

IPC: H04L29/06 ,  H04L9/32

CPC classification number: H04L9/3265 ,  H04L9/3268

Abstract: Embodiments of the present invention are directed to methods and systems for generating and revoking, as well as validating, certificates used to protect communications within networks while maintaining privacy protection. In the context of a method, certificate generation and revocation with privacy preservation comprises determining a secret value to be used by a certificate authority and an entity; constructing a key tree based on the secret value, wherein the leaves of the key tree represent derived keys for the certificates for the entity; and generating certificates for the entity based in part on the key tree leaves. The method further comprises determining that one or more of the certificates should be revoked; determining a minimum key node set that covers the certificates to be revoked; adding the minimum key node set to a certificate revocation list; and providing the certificate revocation list to one or more entities. Corresponding apparatuses and computer program products are also provided.

Abstract translation: 本发明的实施例涉及用于生成和撤销以及验证用于保护网络内的通信的证书同时保持隐私保护的方法和系统。 在方法的上下文中，具有隐私保护的证书生成和撤销包括确定由认证机构和实体使用的秘密值; 基于秘密值构建密钥树，其中密钥树的叶表示实体的证书的导出密钥; 并且基于密钥树叶部分地为实体生成证书。 该方法还包括确定一个或多个证书应被撤销; 确定覆盖要撤销的证书的最小密钥节点集; 将最小密钥节点集添加到证书吊销列表中; 并将证书吊销列表提供给一个或多个实体。 还提供了相应的设备和计算机程序产品。